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2025 GMC SIERRA 2500HD DENALI ULTIMATE 4WD 6.6L DURAMAX DIESEL SUNROOF TECHNOLOGY PKG X31 SUMMIT WHITE LANCASTER PA
This 2025 GMC Sierra 2500HD Denali Ultimate 4WD is powered by the 6.6L Duramax V8 turbodiesel paired with a 10-speed automatic transmission. Finished in Summit White with the incredible Alpine Umber full-grain leather interior, this is GMC's flagship heavy-duty truck with the Technology Package, power sunroof, X31 Off-Road Package, painted wheel arches, and a long list of premium equipment.
The 6.6L Duramax is the heart of this truck.
With 470 horsepower and 975 lb-ft of torque, it has the low-end muscle you want when you're pulling a heavy camper, equipment trailer, or anything else that demands a real HD truck. Paired with the 10-speed automatic, the Duramax delivers its power smoothly without feeling like it has to work hard to move a load.
Then you climb inside and realize this isn't your typical work truck.
The Denali Ultimate cabin is finished in Alpine Umber full-grain leather, one of the best-looking interiors GMC offers. You get heated and ventilated front seats, heated rear seats, Bose Premium Series 12-speaker audio, wireless charging, and a power sunroof.
The Technology Package adds some of the features that really separate this truck from a standard HD. There's a massive 15-inch multicolor Head-Up Display, HD Surround Vision, Rear Camera Mirror, Bed View Camera, and multiple trailer camera provisions.
That camera technology isn't just there to look impressive on the option sheet either. On a truck this size, especially with a trailer behind it, being able to see what's happening around the truck makes maneuvering, parking, and hooking up considerably easier.
The X31 Off-Road Package adds additional capability for rough terrain, including Hill Descent Control and off-road-focused equipment. You also get a two-speed transfer case and the Snow Plow Prep/Camper Package, making this Sierra ready for considerably more than highway duty.
Outside, Summit White with the painted wheel arch moldings gives this truck an especially clean look. The body-color treatment works perfectly with the distinctive Vader Chrome Denali Ultimate grille, giving it a more finished appearance than the typical HD with contrasting wheel arches.
The bed is ready to work too, with a factory spray-on bedliner, LED cargo lighting, 120-volt power outlet, rear wheelhouse liners, and trailer camera provisions.
Mileage is another big plus. This Sierra is sitting 3,211 miles below the market average.
If you're searching for a 2025 GMC Sierra 2500HD Denali Ultimate Duramax near Lancaster, this is exactly the kind of configuration that's hard to duplicate: Duramax diesel, Denali Ultimate, Alpine Umber full-grain leather, Technology Package, sunroof, X31, painted wheel arches, and low mileage.
See it today at Mark Martin Motors in Ephrata, serving Lancaster, Lititz, Lebanon, and York. Call or message us to check availability or schedule your test drive.